schema {
  query: Query
  mutation: Mutation
}

interface Character {
  name: String
}

type CreateUser {
  ok: Boolean
  user: User
}

scalar DateTime

type Droid implements Character {
  name: String
  function: String
}

enum Gender {
  MALE
  FEMALE
}

type Human implements Character {
  name: String
  gender: Gender
}

type Mutation {
  createUser(name: String!, gender: Gender!, age: Int!): CreateUser
  updateUser(userData: UserInput): UpdateUser
}

type Query {
  user(id: Int): User
  users: [User]
  human(name: String): Human
  droid(name: String): Droid
}

type UpdateUser {
  ok: Boolean
  user: User
}

type User {
  id: ID
  name: String
  age: Float
  gender: Gender
  createdAt: DateTime
}

input UserInput {
  id: ID!
  name: String
  age: Int
  gender: Gender
}